feat: add supermodel skill command for agent awareness prompt

cmd/skill.go

@@ -0,0 +1,38 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+const skillPrompt = `This repository has Supermodel graph shard files next to source files.
+
+Files ending in .calls.* contain function call relationships (who calls what, with file and line number).
+Files ending in .deps.* contain dependency relationships (imports and imported-by).
+Files ending in .impact.* contain blast radius data (risk level, affected domains, direct/transitive dependents).
+
+When navigating the codebase:
+- Read .deps files to understand what a module depends on and what depends on it
+- Read .calls files to trace call chains across files
+- Read .impact files to assess the blast radius before making changes
+- These files appear in grep/rg results alongside source code — use the data to navigate faster`
+
+func init() {
+	c := &cobra.Command{
+		Use:   "skill",
+		Short: "Print agent awareness prompt for graph shard files",
+		Long: `Prints a prompt that teaches AI coding agents how to use Supermodel's
+graph shard files. Pipe into your agent's instructions:
+
+  supermodel skill >> CLAUDE.md
+  supermodel skill >> AGENTS.md
+  supermodel skill >> .cursorrules`,
+		Args: cobra.NoArgs,
+		Run: func(cmd *cobra.Command, args []string) {
+			fmt.Println(skillPrompt)
+		},
+	}
+
+	rootCmd.AddCommand(c)
+}